Add README for lxc example
Add README for lxc example

CGenie/solar,openstack/solar,zen/solar,torgartor21/solar,zen/solar,loles/solar,pigmej/solar,Mirantis/solar,zen/solar,loles/solar,dshulyak/solar,torgartor21/solar,Mirantis/solar,Mirantis/solar,Mirantis/solar,pigmej/solar,zen/solar,loles/solar,openstack/solar,dshulyak/solar,openstack/solar,CGenie/solar,pigmej/solar,loles/solar